生物破乳剂对油田采出水处理系统的影响  

Impact of Biological Demulsifier on Oilfield Produced Water Treatment System

作　　者：黄翔峰[1] 陆丽君[1] 闻岳[1] 刘佳[1] 费晓明[1] 关炜[1] 仕佳[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《中国给水排水》2007年第15期21-25,共5页China Water & Wastewater

基　　金：上海市科委资助项目(051258038);上海市科委登山行动计划项目(06DZ22007)

摘　　要：从新疆克拉玛依油田某采油井附近长期受石油污染的土壤中筛选得到了生物破乳剂——TR-1,研究了该生物破乳剂对油田采出水处理系统的影响。结果表明,与化学破乳剂脱出水相比,生物破乳剂脱出水的COD浓度较低,而SS浓度较高。对排放系统而言,使用生物破乳剂具有优势,可使混凝/过滤工艺出水的COD降至150 mg/L左右,同时其可生化性相对较好,再经生物法处理后有望实现达标排放;而化学破乳剂脱出水经混凝/过滤工艺处理后,其COD浓度仍维持在350 mg/L以上。对回注系统而言,生物破乳剂脱出水无硫酸锶结垢趋势,对挂片的腐蚀速率也远低于化学破乳剂脱出水。该生物破乳剂有较好的应用前景。The influence of biological demulsifier TR-1, which was isolated from the contaminated soil near an oil production well in Karamay Oilfield of Xinjiang, on oilfield produced water treatment system was investigated. The results show that the effluent treated by the biological demulsifier has lower COD but higher SS concentrations than that by the chemical demulsifier. In terms of the effluent system, the biological demulsifier has advantages because after its treatment, COD in the effluent from coagulation/filtration process is reduced to about 150 mg/L. The effluent has better biodegradability and can meet the discharge standard if treated by biological method. If using chemical demulsifier, COD is still above 350 mg/L under the same condition. In terms of reinjection system, the effluent from biological demulsifier treatment has no scaling tendency of SrSO4 and very lower coupon corrosion rate than the effluent from chemical demulsifier treatment. This biological demulsifier has a good application prospect.

关 键 词：生物破乳剂 油田采出水 结垢趋势 腐蚀速率 

分 类 号：X741[环境科学与工程—环境工程]